Returns the names of the object.
For Groups, it returns the names of the objects contained in the group (similar to ls()),
in the order sort() puts them.
For Compound Datasets (data.frames), it returns the column names.
For other Datasets, it looks for a dimension scale and returns it if found.
Usage
h5_names(file, name = "/", attr = NULL)
Arguments
- file
The path to the HDF5 file.
- name
The full path of the object.
- attr
The name of an attribute. If provided, returns the names associated with the attribute
(e.g., field names if the attribute is a compound type). (Default: NULL)
Value
A character vector of names, or NULL if the object has no names.
Examples
file <- tempfile(fileext = ".h5")
h5_write(data.frame(x=1, y=2), file, "df")
h5_names(file, "df") # "x" "y"
#> [1] "x" "y"
x <- 1:5
names(x) <- letters[1:5]
h5_write(x, file, "x")
h5_names(file, "x") # "a" "b" "c" "d" "e"
#> [1] "a" "b" "c" "d" "e"
h5_write(mtcars[,c("mpg", "hp")], file, "dset")
h5_names(file, "dset") # "mpg" "hp"
#> [1] "mpg" "hp"
unlink(file)
